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Telephone signalling system between two points - uses set of grouped signal wires and has single return through earth wire
Telephone signalling system between two points - uses set of grouped signal wires and has single return through earth wire
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机译:两点之间的电话信令系统-使用成组的信号线,并且通过接地线具有单回线
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摘要
The points are already connected by wires, and an earth wire is used. The wires are combined in a group and they are kept separate from the earth wire (17). Signals in the form of speech frequency or of h.f. modulated signals are applied by a transmitter station (3) to the wires as a group. They travel in the same direction to a receiving station, and return through the earthed wire (17). The earthed wire is connected to several capacitors (13, 14, 15, 16).
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